Android Open Source - countly-sdk-android Open U D I D_manager

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License

The source code is released under:

Copyright (c) 2012, 2013 Countly Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Soft...

Java Source Code

package org.OpenUDID;
/*from   ww w . j a v a2 s. c  o m*/
import java.math.BigInteger;
import java.security.SecureRandom;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.TreeMap;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.os.IBinder;
import android.os.RemoteException;
import android.provider.Settings.Secure;
import android.util.Log;


public class OpenUDID_manager implements ServiceConnection{
  public final static String PREF_KEY = "openudid";
  public final static String PREFS_NAME = "openudid_prefs";
  public final static String TAG = "OpenUDID";
  
  private final static boolean LOG = true; //Display or not debug message

  private final Context mContext; //Application context
  private List<ResolveInfo> mMatchingIntents; //List of available OpenUDID Intents
  private Map<String, Integer> mReceivedOpenUDIDs; //Map of OpenUDIDs found so far

  private final SharedPreferences mPreferences; //Preferences to store the OpenUDID
  private final Random mRandom;
  
  private OpenUDID_manager(Context context) {
    mPreferences =  context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
    mContext = context;
    mRandom = new Random();
    mReceivedOpenUDIDs = new HashMap<String, Integer>();
  }
  
  @Override
    public void onServiceConnected(ComponentName className, IBinder service) {
    //Get the OpenUDID from the remote service
    try {
      //Send a random number to the service
      android.os.Parcel data = android.os.Parcel.obtain(); 
      data.writeInt(mRandom.nextInt());
      android.os.Parcel reply = android.os.Parcel.obtain(); 
      service.transact(1, android.os.Parcel.obtain(), reply, 0);
      if (data.readInt() == reply.readInt()) //Check if the service returns us this number
      {
        final String _openUDID = reply.readString();
        if (_openUDID != null) { //if valid OpenUDID, save it
          if (LOG) Log.d(TAG, "Received " + _openUDID);

          if (mReceivedOpenUDIDs.containsKey(_openUDID)) mReceivedOpenUDIDs.put(_openUDID, mReceivedOpenUDIDs.get(_openUDID) + 1);
          else mReceivedOpenUDIDs.put(_openUDID, 1);
            
        }
      }
    } catch (RemoteException e) {if (LOG) Log.e(TAG, "RemoteException: " + e.getMessage());}                    
    mContext.unbindService(this);
    
    startService(); //Try the next one
    }
  
  @Override
  public void onServiceDisconnected(ComponentName className) {}
  
  private void storeOpenUDID() {
      final Editor e = mPreferences.edit();
    e.putString(PREF_KEY, OpenUDID);
    e.commit();
  }
  
  /*
   * Generate a new OpenUDID
   */
  private void generateOpenUDID() {
    if (LOG) Log.d(TAG, "Generating openUDID");
    //Try to get the ANDROID_ID
    OpenUDID = Secure.getString(mContext.getContentResolver(), Secure.ANDROID_ID); 
    if (OpenUDID == null || OpenUDID.equals("9774d56d682e549c") || OpenUDID.length() < 15 ) {
      //if ANDROID_ID is null, or it's equals to the GalaxyTab generic ANDROID_ID or bad, generates a new one
      final SecureRandom random = new SecureRandom();
      OpenUDID = new BigInteger(64, random).toString(16);
    }
    }
  
  
  /*
   * Start the oldest service
   */
  private void startService() {
    if (mMatchingIntents.size() > 0) { //There are some Intents untested
      if (LOG) Log.d(TAG, "Trying service " + mMatchingIntents.get(0).loadLabel(mContext.getPackageManager()));
    
      final ServiceInfo servInfo = mMatchingIntents.get(0).serviceInfo;
            final Intent i = new Intent();
            i.setComponent(new ComponentName(servInfo.applicationInfo.packageName, servInfo.name));
            mMatchingIntents.remove(0);
            try  {  // try added by Lionscribe
              mContext.bindService(i, this,  Context.BIND_AUTO_CREATE);
            }
            catch (SecurityException e) {
                startService();  // ignore this one, and start next one
            }
    } else { //No more service to test
      
      getMostFrequentOpenUDID(); //Choose the most frequent
  
      if (OpenUDID == null) //No OpenUDID was chosen, generate one      
        generateOpenUDID();
      if (LOG) Log.d(TAG, "OpenUDID: " + OpenUDID);

      storeOpenUDID();//Store it locally
      mInitialized = true;
    }
  }
  
  private void getMostFrequentOpenUDID() {
    if (mReceivedOpenUDIDs.isEmpty() == false) {
      final TreeMap<String,Integer> sorted_OpenUDIDS = new TreeMap(new ValueComparator());
      sorted_OpenUDIDS.putAll(mReceivedOpenUDIDs);
        
      OpenUDID = sorted_OpenUDIDS.firstKey();
    }
  }
  
  
  private static String OpenUDID = null;
  private static boolean mInitialized = false; 

  /**
   * The Method to call to get OpenUDID
   * @return the OpenUDID
   */
  public static String getOpenUDID() {
    if (!mInitialized) Log.e("OpenUDID", "Initialisation isn't done");
    return OpenUDID;
  }
  
  /**
   * The Method to call to get OpenUDID
   * @return the OpenUDID
   */
  public static boolean isInitialized() {
    return mInitialized;
  }
  
  /**
   * The Method the call at the init of your app
   * @param context  you current context
   */
  public static void sync(Context context) {
    //Initialise the Manager
    OpenUDID_manager manager = new OpenUDID_manager(context);
    
    //Try to get the openudid from local preferences
    OpenUDID = manager.mPreferences.getString(PREF_KEY, null);
    if (OpenUDID == null) //Not found
    {
      //Get the list of all OpenUDID services available (including itself)
      manager.mMatchingIntents = context.getPackageManager().queryIntentServices(new Intent("org.OpenUDID.GETUDID"), 0);
      if (LOG) Log.d(TAG, manager.mMatchingIntents.size() + " services matches OpenUDID");
      
      if (manager.mMatchingIntents != null)
        //Start services one by one
        manager.startService();
    
    } else {//Got it, you can now call getOpenUDID()
      if (LOG) Log.d(TAG, "OpenUDID: " + OpenUDID);
      mInitialized = true;
    }
  }
  
  
  
  /*
   * Used to sort the OpenUDIDs collected by occurrence
   */
  private class ValueComparator implements Comparator {
    public int compare(Object a, Object b) {

      if(mReceivedOpenUDIDs.get(a) < mReceivedOpenUDIDs.get(b)) {
        return 1;
        } else if(mReceivedOpenUDIDs.get(a) == mReceivedOpenUDIDs.get(b)) {
          return 0;
        } else {
          return -1;
        }
     }
  }
}

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